Waec Biology 1999 Past Questions and Answers

Question 36:

• WAEC 1999

Which of the following statements is true?

A. Ptyalin acts on proteins to give amino acid
B. Lactase acts on maltose to give amino acid
C. Pepsin acts on proteins to give peptide
D. Peptide acts on starch to give maltose

Question 37:

• WAEC 1999

Which of the following organisms can be found in fresh water habitat?

A. Sargassum and dog fish
B. Red mangrove and pond skater
C. Sargassum and red mangrove
D. Spirogyra and pond skater

Question 38:

• WAEC 1999

Which of the following is not a biotic factor?

A. Parasites
B. Predators
C. Grazers
D. Pressure

Question 39:

• WAEC 1999

Desert plants are usually called

A. Hydrophytes
B. Mesophytes
C. Xerophytes
D. Sporophytes

Question 40:

• WAEC 1999

The secchi disc is used to measure

A. Speed of flow of water
B. Specific gravity of water
C. Turbidity of water
D. Depth of water